* {
  margin: 0;
  padding: 0;
}

.wrapper {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: skyblue;
  background: url(../images/pr1.webp);
}

.header {
  position: relative;
  padding-top: 100px;
  width: 100%;
  height: 30px;
}

.header .box1 {
  width: 100%;
  height: 30px;
  left: 55%;
  position: absolute;
  display: flex;
}

.header img {
  padding-left: 10px;


}

.title {
  position: relative;
  width: 948px;
  height: 80px;
}

.title .ti {
  position: absolute;
  left: 20%;
}

.title h4 {
  font-size: 30px;
  color: #fff;
  font-weight: bold;
  line-height: 54px;
  height: 54px;
  font-style: italic;
}

.title h5 {
  font-size: 15px;
  color: #fff;
  font-weight: 100;
}

.box {
  margin-top: 50px;
  position: relative;
  width: 100%;
  height: 400px;
}

.contain {
  display: flex;
  position: absolute;
  justify-content: center;
  align-items: center;
  height: 100%;
  width: 80%;
  left: 10%;
  right: 10%;
  margin: auto;
}

.contain .gong {
  width: 550px;
  height: 100%;
  display: flex;
  justify-content: space-between;
}

.box2 {
  width: 100%;
  height: 100%;
  background: url(../images/box1.webp) no-repeat center;
  background-size: cover;
  position: relative;
}

.gong h4 {
  font-size: 18px;
  font-weight: bold;
  line-height: 22px;
  height: 22px;
  width: 80%;
  text-align: right;
  position: absolute;
  right: 50px;
  top: 30px;
  color: #fff;
  display: block;
}

.tu1 {
  width: 269px;
  height: 48px;
  margin-left: 43px;
  top: 50px;
  position: absolute;
  background: url(../images/hd1.webp) no-repeat center;
}

.tu2 {
  width: 269px;
  height: 48px;
  margin-left: 43px;
  top: 50px;
  position: absolute;
  background: url(../images/hd2.webp) no-repeat center;
}

.tu3 {
  width: 390px;
  height: 48px;
  margin-left: 50px;
  top: 50px;
  position: absolute;
  background: url(../images/hd3.webp) no-repeat center;
}


.line {
  top: 80px;
  position: absolute;
  margin: 20px auto 32px;
  width: 300px;
  height: 1px;
  background: #fff;
  opacity: 0.3;
  margin-left: 70px;
}

.bg1 {
  width: 80%;
  height: 100%;
  display: block;
  clear: both;
  position: absolute;
  top: 120px;
}

.txt-title {
  font-size: 20px;
  font-weight: bold;
  line-height: 42px;
  color: #fff;
  margin-left: 55px;
}

.txt-title1 {
  font-size: 15px;
  color: #fff;
  opacity: 0.6;
  line-height: 25px;
  padding-left: 5px;
}

.wp {
  position: relative;
  width: 300px;
  height: 200px;
}

.nr {
  width: 300px;
  height: 125px;
}

.bo {
  position: absolute;
  top: 150px;
  width: 100%;
  height: 40px;
  display: flex;
  justify-content: center;
  padding-right: 50px;
}

.bo .ar {
  line-height: 30px;
  height: 30px;
  text-align: center;
  padding: 0 36px;

  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.6);

  margin-right: 5px;
}

h6 {
  font-size: 10px;
  text-decoration: none;
  color: #fff;
}

.underline {
  text-decoration: underline;
  font-size: 12px;
}

.box3 {
  width: 100%;
  height: 100%;
  background: url(../images/box2.webp) no-repeat center;
  background-size: cover;
  margin-top: 30px;
  position: relative;
}

.box4 {
  width: 100%;
  height: 100%;
  background: url(../images/box3.webp) no-repeat center;
  background-size: cover;
  position: relative;
}

#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.78);
  /* 半透明黑色背景 */
  display: none;
  /* 初始状态下隐藏 */
}

#overlay .dia {
  width: 1440px;
  margin: 0 auto;
  position: relative;
  transform: scale(0.641667);
  position: absolute;
  left: 50%;
  top: 50%;
  margin-top: -368.5px;
  margin-left: -720px;
  z-index: 99999;
  display: block;
}

.dia-cent {
  width: 100%;
  height: 100%;
  position: relative;
}

.dia-cent .dia-title {
  font-size: 48px;
  line-height: 52px;
  height: 52px;
  font-weight: bold;
  color: aquamarine;
}

.dia .dia-center {
  margin-top: 100px;
  width: 1440px;
  height: 567px;
  padding: 62px 178px 70px 160px;
  background: url(../images/dia2-center-bg.webp) no-repeat;
}

.dia .center {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
}

.dia .center p {
  margin-bottom: 50px;
  display: flex;
  flex-direction: column;
  width: 1000px;
}

.dia .center .si {
  font-size: 18px;
  line-height: 34px;
  color: #000;
}

.dia .center .qu {
  font-size: 24px;
  line-height: 28px;
  color: #2a78e4;
  font-weight: bold;
  margin-bottom: 15px;
}

.dia-close {
  width: 79px;
  height: 79px;
  background: url(../images/dia-close.webp) no-repeat;
  position: absolute;
  top: -96.25px;
  right: -73.7917px;
}